Science

Major animal groups

Major Animal Groups introduces Class 9 Science learners to the diversity of animals within the chapter Patterns in Life: Diversity and Classification. Students learn why organisms are classified and compare major invertebrate phyla and chordates using observable features such as body symmetry, tissue organisation, segmentation, body cavity, support, and habitat. They connect these traits with representative examples and distinguish broad vertebrate groups, building a clear foundation for understanding how classification reflects similarities, differences, and evolutionary relationships.